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C. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES April 14, 1931.

' Original Filed Aug. 19, 1921 10 Sheets-Sheet 1 flaw Arrows):

c. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES Apnl 14, 1931.

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Re. 18,042 Original Filed Aug. 19, 1921 10 Sheets-Sheet 3 C. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES April 14, 1931. Re. 18,042

Original Filed Aug. 19, 1921 10 Sheets-Sheet 4 JIW/IQYJ'OJZ 7 J2, 5 CW fir 7Ga/brmmw c. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES April 14, 1931 Re. 18,042 Original Filed Aug. 19, 1921 10 Sheets-sheaf. 5

C. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES April 14, 1931.

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April 14, 1931. f"

C. E. COCHRAN V TRUCK FOR HANDLING PAPERROLLS AND OTHER ARTICLES April 14, 1931. Re. 18,042

Original Filed Aug. 19, 1921 '10 Sheets-Sheet 8 C. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES Re. 18,042 10 Sheets-Sheet, 9

April 14, 1931.

Original Filed Aug. 19, 1921 'IIII/IIIIII/III]III,IIIIII/IIIIIIIIIIIIIIIIIIIIIIII/I/I Q l V C. E. COCHRAN TRUCK FOR HANDLING PAPER ROLLS AND OTHER ARTICLES April 14, 1931. Re. 18,042

10 Sheets-Sheet l0 (iriinal Filed Aug. 19, 1921 Reiuued Apr. 14, 1931 UNITED STATES PATENT OFFICE can: I. coma], OF cmmmn, 310, ASSIGIIOB TO m PARKER ELEC- me 001mm, OF GLEVELAID, OHIO, A. CORPORATION OF OHIO TRUCK FOB HANDLING PAPER ROLLS AND OTHER 0111!!!! I0. 1M1, dated lay 19, 1m, Serial Io. 08,703, fled August 1., 1881. Application for reissue fled larch 6, 1928. Serial Io. 844,808.

This invention relates to. an automobile truck provided with mechanism for receiva load and moving it through two stages 0 operation into transportable position, and

I after rtation, de ofiting it.

Thd mnism hereiii shown constitutes an improvement on the mechanism shown in my Patent No. 1,531,735 granted March 31, 1925, to The Elwell Parker Electric Compuny, as assignee. The present improvements relate articularly to mechanism for controllinga oad such as a c lindrical paper roll, whereby the load may readily handled under greatl varying circumstances. The general ob ect of the invention is to provide sim 1e and eflicient power driven mechanism or raising and positioning the load and efiectively carrying it during transportation and readily depositing it under the accurate control of the operator.

More particularly my invention provides a truck equipped with a flexible member exover a suitable boom hinged at its lower end to the truck frame, the load being received in a suitable sugplort pivoted to the lower end of the boom. e flexible member first raises the load whether picked up from a recumbent or vertical position by tipping the boom over the truck body and then u $0 ends the load, if necessary, by rotation of e pivotal support into a convenient transportable position. The arrangement is such that after transportation the load may be deposited in either a vertical or recumbent position. A suitable spring mechanism is arran to support the tip ed boom and automatlcally return it to loa -discharging position, when the relaxing of the flexible member rmits such movement.

A further object is the provision of simple and eflicient means whereby a load on an automobile truck may be de sited in vertical or horizontal position as esired.

My invention may be embodied in a truck adapted for receiving, elevating and up-ending pear rolls, and transporting them and therea r depositing them.

The above features and others contributing to the eficiency of the machine are hereinafter more fully explained in connection with-an approved embodiment'as shown in the accompanyin drawings. The essential characteristics 0 my invention are summarized in the claims.

In the drawings, Fig. 1 is a side elevation of the truckwith the parts in position just after receiving the load, in this case a paper roll lying horlzontally.

Fig. 2 1s a'similar view showing the parts in position with the boom tipped and the load still horizontal in extreme elevated 'tion. Fig. 3 is a similar view showing t e parts 1n position for transporting the load, the load having been rotated into up-ended position.

Fig. 4 is a similar view showing the parts in position with the boom inoriginal sition and the load in vertical positon a ut to be discharged.

Fig. 5 is a rear elevation of the truck and load in the position described in Fig. 1.

Fig. 6 is a plan view of the boom actuating and control mechanism, while Fig. 7 is a cross section substantially along the line 7-7 of Fig. 6.

Fig. 8 is an enlarged view in side elevation, parts' being shown in section, showing in detail the hinged connection of'the boom with the rear end of the truck, and the pivotal arrangement of the load-receiving member at the lower end of the boom.

Fi 9 is a front elevation of the casing constltuting the lower end ofthe boom for receiving the pivotal paper roll support. Fig. 10 is a plan of the same.

Fig. 11 is a front elevation of the pivotal paper roll support.

Fig. 12 is a detail in horizontal section, illustrating the winding mechanism -which may be employed.

Fig. 13 is an enlarged vertical section of the winding mechanism taken on the line 13 13 of Fig. 12.

Fig. 14 is a transverse section of the winding mechanism taken substantially along the line 14-14 of Fig. 13.

Fig. 15 is a side elevationof the'truck and showing in detail means for automatically controlling the motor winding m Fig. 16 is an enlarged view of the switch mechanism.

As shown in Figs. 1 to 4, 10 indicates the frame body of a truck which is supported by rear wheels 11 and forward wheels 12. These forward wheels are on opposite sides of a front housing 13 composed of upright and transverse members secured to the frame members 10. This housing may carry a. suitable motor (not shown) for driving the front wheels. The truck may be steered by any suitable mechanism, not shown. On the upper part of the front housing is a casing 15 which may receive a storage battery for driving the truck, and-for operating a cablewinding mechanism hereinafter described.

The construction of the frame, wheels, housing, etc., above mentioned, does not enter into the present invention. They may if de sired be formed according to Patent No. 1,260,145, granted March 19, 1918, to the Elwell-Parker'Electric Company as assignee of Clyde E. Cochran.

In the present invention, I hinge to the rear end of the truck frame 10 a boom 20. This is composed of an approximately upright member, shown as an outwardly facing channel beam bent into suitable shape and suitably braced by a cross member as at 23. It will be noted that the frame is somewhat A shaped and between the arms of the A and rigidly secured to them at their lower ends is a casting 21, which is pivoted at 42,

. on a horizontal pivot, to the truck frame.

The casting 21 is provided with bearings adapted to receive in pivotal relation the stub shaft or' axle of a second casting to which is suitably secured a scoop 50, the casting 45 and scoop together constituting a support on which the load, as for instance, apaper roll, may be rolled and thereafter tilted into substantially upright position.

The casting 21 is preferably substantially rectangular, having an elongated hub 16 extending forwardly around a central opening. The lower corners are provided with ears 17 adapted to be received on a shaft 42 secured to the rear end of the truck body 10. The sides may be suitably flanged to receive the ends of the bent channel beam constituting the A-frame boom 20, which may be secured thereto in any desired manner.

The load supporting member preferably consists of the casting 45 illustrated in Figs. 8 and 11 and it is suitably secured by bolts or rivets passing through holes 27 to the arcuate scoop 50 having a partially closed end 56 and projecting lugs 57 mounted on suitable plates which are secured to the scoop 50. Projecting forwardly from the center of the casting 45 is a tapered hollow stub shaft or axle 31, having inserted at the forward and a hardened steel pivot 32 provided with a reduced threaded end adapted to receive a nut 33.

The stub shaft 31 is adapted to rotate in ball races 34 within the rear portion of the casting 21, while the forwardly extending pivot 32 has a bearing within ball races 35. A protecting cap 36 may be secured as by bolts 37 to the outer end of the hub 16.

Depending from the top portion 24 of the boom at the junction of the arms of the A- frame is a pulley block 25 over which extends a cable 30. One end of this cable passes to a suitable winding drum as illustrated at 113 in Figs. 1 to 4. The other end of the cable may be suitably attached to either of the lugs 57 on the scoop 50.

By properly locating the lugs 57 with relation to the center of gravity of the load the moments acting on the scoop 5 0, due to the drawing in of the cable 30 when attached to the lug 57 can be so determined that the rotation of the winding drum 133 will first tip theboom forwardly over the rear portion of the truck, as shown in Fig. 2, with the load remaining in the horizontal position and upon a. further drawing in of the cable 30 the scoop and load will be rotated in the bearings 34 and 35 until the load will be upended into a substantially upright position as shown in Fig. 3, the ear 152 and lug 151 acting as a. positive stop.

The pivotally supported casting 45 is provided with a shoulder 59 which is in the position as illustrated in Fig. 11 when the scoop is horizontal as in Figs. 1 and 2. The shoulder 59 is adapted to engage andoperate automatic mechanism for controlling the cable which will be hereinafter more fully described.

Any suitable securing means may be used to secure the load on the scoop. I have provided, therefore, a load retaining latch 49 which is slidably mounted between the armate ribs 58 and engages a substantial portion of the circumference of the roll when drawn out to the roll locking position.

011 each side of the boom I provide a suitable resilient connection secured to the truck frame in front of the pivot 42. As illustrated in Fig. 4, I preferably pivot to each arm of the A-frame constituting the boom, the upper ends of the tubular sockets 60. Extendlng from these socket members, and coaxially therewith, are rods 62. These rods extend loosely throu h tubular heads on partially tubular mem ers 64, pivoted at to the frame 10. On the lower ends of the rods 62 are nuts 66 limiting the upward movement of the rods. Surrounding the reduced upper ends of the rods and bearing against collars formed at the junction of the reduced and full sized portions of the rods and extending into the bore of the members 60 and seated against the far end of such bore, are compression springs 67.

The construction described provides two lateral tie members for the boom adapted to limit its outward swing to substantially vertical position, as shown in Figs. 1 and 4. These sp provide anelastic CllSlllOIl for the boom wfen it is drawn forwardly by the cable to the rting position over the truck frame, the rods 62 telescoping within the tubular members 60 and 64, allowin the socket member 60 to approach the to ular member 64. p

To obtain an eflicient mechanism for handling either a vertically or horizontally disposed load, pro rly position it upon the truck and then posit it in either a vertical or horizontal position, the boom and scoo must, at certain times, be operable indepen ent of each other. For'instance, it is quite necessary that the scoop be arranged to ck up a horizontally dispowd load from w ich it may be elevated to a transportable position, as shown in Fig. 3, and then may be again lowered to the horizontal position after having been t rted. The boom should be retained in a tipped-position during this scoop lowering period after which it should be swung outwardly in order to deposit the load.

A second condition to be fulfilled is that present when a horizontally disposed load is to be picked'up by the scoop, positioned for trasportation, transported, and then deposited in an up-ended or vertical positlon, as illustrated in Fig. 4. A third condition is wherein a vertically di (1 load is to be picked up, as shown in Fig. 4, tilted to transporting position, transported, lowered to horizontal ition and then unloaded. A fourth con ition occurs when a vertically disposed load is to be picked up by the scoop, transported, and deposited in a vertical position.

Since it is usuall necessary that the truck shall return to the oading place in an empty or unloaded condition, all of the fore oing loading and unloading movements 0 the scoo must likewise be obtained when the true is em ty.

I have f dund that in order to have the truck fulfill the aforesaid conditions under which it is to handle a load it is necessary to have means for retarding the outward movement of the boom when the flexible member 30 is payed out by the winding mechanism 113. Such mechanism is particularly required, for instance, when the truck is to pick up a load from a horizontal position, trans port it and then unload it in a horizontal position..

In order to rotate the scoop when in the vertical or horizontal loadin position, it is quite essential that the scoop be first elevated to clear the floor. This requires that the boom must be retained in the inclined transporting position during the period the scoop is being revolved from the inclined transport ing position, as shown in Fig. 3 to the horia suitable bearing 19 and whi zontal position as shown in Fig. 2. This condition must also be fulfilled when a vertically disposed load is to be picked up, trans orted and then lowered to the horizonta position.

To meet the requirement of having the revolving movement of the loadin scoop independent of an movement of the ooom I have provided la-tc ing means shown as a pivotally mounted enga 'ng member 22 adapted to engage a lock p ate 23 rigidly secured to the boom. .The member 22 maybe actuated by a bell crank lever 18 pivotal] mounted in is attached to an adjustable connectin rod 26. This bell crank may be shifted by adongitudinally disposed rod 28 extending to the fore part of the truck whence it is connected to another bell crank lever 29, pivotallymounted on the vertical frame member 87. The latter bell crank may be shifted by a downwardly extending connecting rod 38 connected to a foot lever 39 positioned adjacent the truck foot levers of the usual type.

By such a control mechanism, the outward movement of the boom may be retarded at the operators will by manipulating the foot le ver 39, which thereby raises the member 22 into engagement with the member 23. I prefer to have the opening 41 in the member 23 of suflicient size to permit a sli ht movement of the boom before the mem r 22 becomes engaged therewith, to facilitate the en aging and disengaging of these members.

s the scoop is elevated to vertical position by the flexible member 30 and Winding mechanism 13 the boom will be displaced inwardly a slight distance upon the completion of the scoop movement, whence the member 22 may drop out of enga ement with the lock member 23. This finalmovement of the boom also compresses the springs 67 disposed on the telescoping members 62.

Since the boom and scoop always have a tendency to rotate to a vertical position when loaded no further mechanism is necessary to obtain the complete cycle of movements required to handle vertically or horizontally dis osed loads.

e operation of the boom when the truck is empty cannot be efliciently controlled unless additional means is provided to quickly initiate the outward movement of the boom to vertical posit-ion. This is due to the fact that when the truck-is loaded the resultant center of gravity of the boom, scoop and load is so near the pivotal axis of the scoop that the turning movement tending to rotate the loaded scoop to a horizontal position is considerably less thanv when the scoop is empty.

Hence by quickly displacing the boom out- Wardly to the vertical position suflicient tension may be maintained in the flexible member 30 as it is being payed out by the winding mechanism 13 to hold the scoop immovable on the boom during the outward movement of the latter.

A very convenient manner of obtaining this result is to provide a rod member 76 carrying a spring 83 which is adaptable to shift the unloaded boom about the boom pivot'42. One end of this member may be secured to a connecting member 84 which may be pivotally secured to the lower part of the boom in a suitable bearing 43 mounted on the upper part of the scoop bearing casting 21. The actuating member is pro- "ided with a compression spring member 44 arranged to be compressed between the boom and the body of the truck.

As it is desirable to utilize the force in the spring only when the truck is empty I have provided means operative at will for compressing the spring. The means shown com prises a notched sleeve 75 mounted upon the free end of the rod member 76 and adapted to slide in a pivotally mounted bearing 77 secured to the frame member 10 by a supporting plate member 78. Projecting portions 7 9 integral with this bearing are adapted to pivotally support a dog lever 80. The lower end 81 of this lever may be shaped to provide a pawl adaptable for engaging a notch 82 formed in the sleeve 75.

The resilient member 83 may abut the en.- lar ed portion 84 of the member 76 at one en while the other end may abut the upper end of the notched sleeve 75.

It is to be seen that as the boom is inclined forwardly from a vertical position by the cable, the spring will not be compressed unless the sleeve 75 is held stationary, by the dog 81 engaging the sleeve in the notch 82 in the sleeve. If it is desired to incline the boom without compressing the spring 83 the operator may shift the dog lever 80 out of engagement with this notch by a suitable connecting rod 85, connected to a bell crank lever 86 secured to the frame member 87 in the front of the truck. A spring 8711 which indirectly maintains the dog in an engaging position is thereby compressed between the guide plate 88 ri id with the truck frame and a collar 89 rigid with the connecting rod. The crank member 86 may be shifted by an adjustable connecting link 91 connected to a control lever 92 positioned near the top of the truck. I prefer to arrange this control lever to have a movement 180 so that when in an upward position the end of the link 91 connected therewith passes the center of the lever pivot and the lever will consequently remain in this elevated or releasing position.

By lowering the control lever the dog is dropped to an engaging position on the sleeve 75. Hence, while in this position, the operator may start the widing mechanism, upon which the boom will be inclined inwardly by the cable 30 and the dog 81 will be engaged in the notch 82 and the spring member 83 will be compressed between the end of the sleeve and the shoulder 84 of the member 76.

When the operator desires to tilt the empty scoop into vertical position he releases the winding mechanism to pay out the flexible member 30, upon which the spring 83 will react to urge the boom and scoop outwardly and maintain the flexible member taut during this outward movement therebymaintaining sufficient tension in the flexible member 30 to hold the scoop and prevent it from dropping to the horizontal position. Hence, as the boom is displaced toward the vertical position the bottom of the scoop comes to rest upon the floor thereby preventing rotation about its pivotal axis.

While not necessaryfit is desirable that locking means be provided to positively lock the scoop to the boom during this tilting movement. A convenient manner of locking the boom to the scoop is to provide a latch member 153 pivotall mounted on the outer face of the boom which is adapted to engage a stop lug 154, another function of which will be hereinafter described. '-The engagement and disengagement of the latch 153 may be automatically obtained by a downwardly extending actuating rod 155, which is pivotally attached to the outer end of the latch 153. This rod may have a suitable guide plate 156 secured to the boom frame which also serves as a retaining means for holding the spring 157 in a compressed condition on the rod and near the lower end thereof.

The other end of this spring may abut a collar 158 secured to the lower end of the rod. An adjustable member 160 may be mounted on the end of the rod which is pivotally engaged by a stud member 159 rigid with the end member 10a of the truck. Hence, as the boom is tilted inwardly to an inclined position, the latch member 153 is rotated out of engagement with the lug 154 and the boom is ree to rotate on its pivotal axis. This disengagement will not take place however, only when the inward movement of the boom is nearing completion. It is to understoodthat this locking mechanism is out of engagement only during the period when it is possible to lock the boom in a tilted position by the dog 22. i

In Fig. 1, the (lot and dash lines indicate a paper roll lying horizontally in the scoop 50. The lugs 57 are located on the scoop as hereinbefore stated in such a manner that a tilting movement of the load will -take place before the load rotates on the pivot 45. I have found that such an arrangement requires one or more terminals or lugs for the cable 30 and the end of the cable is attached to the upper or lower lug 57 in accordance with the length of the paper roll being handled.

When the roll has reached the up-ended v tion shown in Fig. 4 the shoulder 59 see 11 will have rotated sufiiciently to engage a bell crank lever 68 which automaticalus a switch controlling the winding (11m. The load is now in tion for transportation by the truck as esired.

It will be seen that with the mechanism described, the truck may be backed into position adjacent to a horizontal paper roll and the latter rolled into the scoop. The scoop ma be designed so that the truck may approac articles to be loaded with suficient speed to de 't or scoop them onto the support.

y suitable winding mechanism may be provided for pulling in and paying out the cable 80. We find it very convenient to use an electric winch for this purpose, which includes a winding drum, a motor geared to it and suitable mechanism whereby the device may be self-locking whenever the motor rotation sto but enabling the winding in at will and so the paying out of the cable whenever desired, by rotating the drum in the unwinding direction faster than gravity-acts and the action of the springs 67 tends to rotate it.

A convenient form of winding mechanism as above outlined (but which is not r so a part of this invention) is illustrated in Figs. 12, 13 and 14, where the winding drum 100 is on a shaft 101 which carries a spur gear 102 meshing with a pinion 103 and mounted on a sleeve 107 which is loose on the shaft 101. Surrounding the sleeve 107 is a. spur ar 108 which is connected with the sleeve y means allowing independent movement for only a fraction of a rotation. This gear 108 meshes with a pinion 109 on an extension of the armature shaft 110 of a motor (not shown). Between the gear 108 and the pinion 106 is a friction brake efl'ective whenever the raisin rotation stops. This consists, as shown, 0 a disc 111 rigid with the sleeve 107, an annular friction member 112 alongside of the disc and held stationary by engagement with the casting 113 of the winding mechanism, and an annular cam member 114 on the other side of the friction member 112 and loosely splined on the sleeve and havi on its outer side a face cam 115. This cam is adapted to be abutted by a complementary cam 116 which is ri i on the sleeve 107 and has a rtion exten 'ng within the s ur gear 108. he gear 108 has notches 117, ig. 13, which are occupied by lugs 118 on the cam member 116 to allow some freedom of movement between the gear and cam member.

After this freedom is taken up in the raising rotation of the gear, the gear drives the cam member 116, and this, by reason of the direction of the inclines, frees the face cam 115 from braking friction and positively carries it around by reason of the engagement of the shoulders on the two cams.

ends 0 the notches 117 engage the In Itwillbeseemthereforathatintherais applie by reason of the inclined action of 1 the cams and the load is held.

To lower the load the armature is simply driven in the reverse direction from the raising movement. This turns the gear 108 backwardly faster than the load would turn it, and in this movement webs 119 on this gear engage lugs 120 on the cam member 114, and

ca it around so that the brake is not ap- Pll The 61:" II :t of tllB WGbS 119 With the lu 120 t :es before the other. 118. Whenever this lowering rotation of t e armature stops, the tendency of the load to pull the train of aring applies the brake, as already desc fie It will be realized from the above description that the device is self-locking whenever the motor rotation ceases, whether it has been raising or lowering the load. It is to be understood, however, that the winding mechanism so illustrated and described is simply set out by way of illustration, as any self-locking winding mechanism may be used.

The winding motor not shown may be supported on the bracket or base plate extending from the gear housing of the winding mechanism 113. All of these parts may be a self-contained unit mounted on a suitable platform 122 secured to the rear of the forward housing 13 and supported by it and by suitable struts 123 rising from the frame members 10. By su porting the winding winch directly behin the housing for the battery and driving motor and above the rear frame, it does not crowd the housing and is out of the way of the boom when tipped over as shown in Figs. 2-and 3, and at'the same time the cable may'pass directly from the winch to the top of the boom and obtain a sufliciently direct pull for readily tipping the latter. I v

As one of the uses of the present truck is for handling paper rolls, it is desirable to provide automatic mechanism to stop the inward swing of the boom at a definite point,

thereupon tilt the roll into a substantially upright position and then stop the operation of the Winding drum. It is desirable also to have the mechanism under the constant control of the operator for lowering the roll so that it may be gently deposited in an upright position from the truck. To efiect the results enumerated, I provide a simple mechanism shown in Fig. 15 and which will now be described.

A suitable doubleole double-throw knife switch 130 is adap to break the current on the elevating motor, the bottom position of the switch being for raising and the top position for lowering. The switch is operated by a push and pull rod 135, which carries an operating handle 145, and is connected with the arm 134 of a bell crank, pivoted at 133 on a bracket'secured to the frame 13,. The other arm 132 of the bell crank is connected by a link 131 with the switch. The rod 135 slides loosely through a suitably supported bracket 136 and has two collars 137 ually spaced on the rod from the bracket w en the switch and associated parts are in open or neutral position. Surrounding the rod, between the collars 137 and the bracket 136, are compression springs 138 so that the handle can be moved in either direction only against the springs which tend to restore the handle to neutral position.

The knife switch is swung into raising position by an outward pull on the handle 145 which causes a downward pull on the link 131 thou h the bell crank described. Rigidly connecte 139 having secured thereto a collar 140 slidably receiving a rod 141 having adjustably fixed collars 142 and 143 thereon.

To start the raisin operation the operator simply pulls out thediandle 145. The motor now operates and winds up the cable 30, tipping the boom forwardly over the rear portion of the truck at the same time raising the aper roll. As the boom is coming into its final position with the roll disposed horizontally as shown in Fig. 2 as the drum 113 continues to draw on the cable the scoop containing the paper roll is then revolved about the pivotbearmgs 34 and 35 until it is tilted into up-ended position. As the boom approaches its extreme forward tipped osition the rod 141 slides idly through the co lar 140 until the fixed collar 143 thereon approximately reaches the collar 140.

As the paper roll approaches its up-standing osition the shoulder 59 strikes the upstanding arm on the bell crank 68 projecting through an openin 27 in the casting 21, and moves the arm 68 (fownwardly to the position shown in Fi 15. This movement is transmitted throng the rod 141, the collar 143 engagin and moving the collar 140 secured to the 11 crank 132, thereby pushing the link 131 upwardly and moving the switch into neutral position. This opens the current to the motor and the self-locking mechanism retains the load in such position.

To lower the load the operator pushes in on the handle 145, which movement pushes the link 131 further upward and swings the knife switch 130 into its upper engagement to direct current in the reversing direction with the bell crank is a third arm to the motor, which allows the cable to pay out, the load being lowered as long as the handle is held in. Whenever the operator relieves the force on the handle the springs 138 restore the handle to neutral position, which swings the switch open and stops the motor, and the self-locking mechanism holds the load.

From the foregoing description, it willbe apparent that I have described a load han- I dling device which is highly eificient for the purpose intended. The device is well ada ted for handling heavy articles and can 0 operated in narrow aisles; can be quickly loaded and unloaded and requires but little attention.

I claim:

1. The combination of a truck, a boom pivoted thereto, rotatable load supporting means carried by said boom, winding mechanism carried by the truck, including a flexible member leading from the winding mechanism over the boom and connected to the load supporting means, whereby the boom may be tipped inwardly thereby raising the load, and locking means for holding the boom in said tipped position.

2. The combination of a truck, a boom pivoted thereto, a pulley mounted thereon, means for pivotally supporting a load with the axis thereof in vertical position on the boom, locking means secured to the truck adapted to en age the boom, winding mechanism carried by the truck, a pulley on the boom, a cable leadin from the winding mechanism over the pn ley on the boornand connected to the load supporting means, whereby the boom and load supporting means may be tipped inwardly.

3. The combination of a truck, a substantially vertical boom ivoted thereon, means for pivotally supporting a load with the axis thereof in vertical position on the boom, means for swingin the boom inwardly thereby raising the load and means to thereafter prevent return movement of the boom from its swung position, there being a movable support for the load on the boom, the movement being such as to allow the load to then swing into a position such that said axis is substantially horizontal.

4. The combination of a truck, a boom pivotally connected therewith, a, load receiving member pivotally supported on the boom, means for tipping the boom inwardly to move the load receiving member therewith, and means for locking the boom in said tipped position, said first mentioned means being connected with the load receiving means in such manner as to control said receiving means for rotation on its pivot after such pressed means acting when the frame is tilted to urge the same to vertical position, and additional s rin means arranged to be comp by e ti ting of the frame, and active in combination with the first mentioned springs to initiate the movement of the frame to a-vertical sition.

6. The combination 0 a truck frame, a hoom'pivoted to the truck frame, a load carrier noted 'to the boom, mechanism con nectes with the load carrier adapted in the first rtion of its movement to tip the boom and in the latter portion of its movement to swing the load carrier on its pivot, and latching means adapted to restrain the movement of the boom upon a reverse movement of said mechanism. 7

7. The combination of a truck, a boom pivoted thereto, means for pivotallysuppgrting a load in a 'tion normal to the 113 means for tipping the boom inwardly an thereby raising the load and thereafter tilting the load into up-ended position, means for locking the boom in an inwardl tipped position, and means for shifting t e boom outwardl when said locking means is disengaged f i-om the boom.

8. The combination of a truck, a substantially vertical boom pivoted thereto, load supporting means pivotally mounted on the boom, means for swinging the boom inwardly and the load supporting means upwardly, means for-lock the boom against outward movement and se ective mechanism manipulated from the operators position on the truck for selectively controlling the movements of all of the aforesaid means.

9. The combination of a truck, a boom pivoted thereto, means for supporting the load in one osition near the lower end of the boom, a unitary mechanism for first swinging the boom inwardly and raising the load and thereafter tilting the load into a different position by a continuous action thereof, locking mechanism for securing the boom during the tilting movement of the load, and means tending to restore the tipped boom to its original position upon the releasing of said locking mechanism.

10. The combination of a truck, a boom pivoted thereto, a rotatable load supporting means carried by said boom, winding mechanism carried by the truck including a flexible member leadin from the winding mechanism over the o0m and connected to the load supporting means whereby the boom may be tipped inwardl thereby raising the load, and means for Ice ing the boom in said tipped position including a remotely con-- trolled catch engaging the boom operable from the drivers position on the truck.

11. The combination of a truck, a boom pivoted thereto, a pulley mounted thereon,

means for ivotally supporting a load in vertical position on the boom, locking means secured tothe truck adapted to engage the boom, winding mechanism carried by the truck, a cable leadin from the winding mechanism over the pu ey onthe boom con-' nected to the load supporting means whereby the boom and load supporting means may be tipped inwardly with a consequent lowering movement of the load sup orting means upon a reverse movement of the winding mechanism.

12. The combination of a truck, a boom pivoted thereto, means for pivotally su rting a load in a vertical osition on t e m, means'for tippin the oom inwardly thereby raising the 10a and thereafter tilting the load into a horizontal position on the boom, and locking, means for retaining the boom in said tipped lposition, said locking means being manua y controlled from the operators osition on the truck.

13. The com ination of a truck, a boom pivoted thereto, a pulley mounted thereon,

winding mechanism carried by the truck, a load receiving vmeans, a flexible member leadin from the winding mechanism over the u ley on the boom and adapted toraise the oad receiving means by swinging the boom inwardly, means adapted to cause further operation of the winding mechanism to tilt the load receiving means into a substantial upright position, a resilient means acting on the boom and arranged to oppose substantially the entire inward movement of the boom and to automatically start the boom to an outward position, whereby tension will be maintained in the flexible member upon a reversal of the winding mechanism throughout substantially the entire outward movement of the boom.

14. The combination of a truck, a boom pivoted thereto, winding mechanism carried y the truck, load supporting means vertically supportedby the boom when in normal position, means for locking the boom in a. tilted position on the truck, means connecting the winding mechanism with the load supporting means whereby operation of the winding mechanism will first tip the boom and raise the load, and upon reversal of the winding mechanism lower the load into substantial horizontal position while the boom is retained in locked position, and mechanism including a control lever manu ally operative from the drivers position for releasing the boom subsequent to said load lowerin movement.

15. T e combination of a truck, a boom pivoted at the rear end of the truck, a load engaging device pivoted to the boom on an axis extending longitudinally of the truck, means for ti ping the boom and subsequently turning t e load engaging device on its axis and means arranged to be controlled by the operator to arrest movement of the boom in either direction when the load engaging device is turning on its axis after the boom has been tipped to incline the longitudinally extendm axis;

16. The com ination of a truck, a pivotally mounted boom on the truck, a load engaging member pivotally mounted on the boom, means for causing a relative movement between the boom and the load engaging device and means for automatically latching the boom to render it unmovable while the load engaging member is being rotated.

17. The combination of a truck a boom pivoted thereto, winding mechanism carried by the truck, load handling means pivotally supported by the boom, connections from the winding mechanism to the boom and ham dling means to cause the boom to be tipped and the load raised upon operation of the winding mechanism, and means controlling the boom to hold it in one of its positions whereby the operation of the winding mechanism will afterward act on the load handling means only, to tilt the load into a position transverse to its previously raised and tipped position.

18. The combination of a truck, a substantially vertical boom ivoted thereto, means for pivotally supporting a load on the lower end of the boom, boom actuating means for causing the load to be tilted into a substantially vertical position and releasable means for holding the boom against tilting movement.

19. The combination of a truck, a tiltable supporting member thereon, a load receiving member pivotally connected to the supporting member, and two holding means, one acting on the supporting member and the other acting on the load receiving member,

there being provision for causingthe load receiving member to drop to a recumbent position upon the release of the holding means acting thereon. V

20. The combination of a truck, a boom tiltably connected thereto, winding mecha-- nism on the truck adapted to tip the boom and raise the load supported adjacent to the reverse action of t e winding mechanism, due

to the fact that said member is not truly balanced.

CLYDE E. COCHRAN- boom, additional mechanism for holding the boom tipped, there being rovision for causing gravity to tilt the loa into substantially horizontal position, upon the release of the winding mechanism, automatic means for stopping the raising and tilting movement of the winding mechanism, and manual means for controlling the lowering movement and stopping it whenever desired.

21. The combination of a truck, a boom 

